Perhaps you should try some spelling variations:
phan chuc » pham chuc, phan khuc, phan thuc
thi nang » thi cong, ki nang, thi hanh
so sach » bo sach, co sach, hoc sach
va danh » va dinh, va dan, va hanh
va vanh » va van, va hanh, va anh
hieu ve » hieu va, hieu van
ve phan » va phan, ke phan, ve phat
nang co » nang cao, nang doc, nang noi
so sanh » do sanh
co hoi » co hoc, co loi
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (so sanh)) thi nang co hoi. hieu ve phan chuc ((va vanh) OR (va danh)) dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) thi nang co hoi. hieu ve phan chuc ((va vanh) OR (va danh)) dai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (so sanh)) thi nang co hoi. hieu ve phan chuc ((va vanh) OR (va danh)) dai cua te".
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (so sanh)) thi nang co hoi. hieu ve phan chuc ((va vanh) OR (va danh)) dai cua te*.